Drive mechanism for grizzlies



G. F. DODGE DRIVE MECHANISM FOR GRIZZLIES Jan. 17, MZ,

2 sneeuwman i ll. IIIIII. III.

Jan. 17, 1928.

G. F. DODGE DRIVE MEGHANISM FOR GRIZZLIES Filed Nov. 6, 1926 MhllTED STATES PATENT OFFICE.

.tipplicetion filed Novelnher 6, 19%.

Vlhe invention rehites. to mechanism priinerily designed t'or drivingthe sholfts ot Ls-rrizzlies `lor screening colre :rnd siinilnr inuterizrh which grizzles comprise in their con struction concurrently driven parel] el stuitte equipped with cooperating feeding und r-rereening elements which present e succession et rows ot sepzuoting openings tor the nnrterizil to he screened.

ln grizzlies es generally heretot'ore constructed ell the sheiits have heen coupled toygether hy ineens ont sprockets zuid chuins in such e inenner thet When the center or drive ehelt Wes :ictufited troni u suitiihle source ot i power the inotion ivzrs transmitted to the series ot shzrifts. This, while n eoniporetively cheep t pe ot drive, .is not entirely satisituctory tor various rezieons, Amongst others. it necessnry to disconnect two driving; choine in order to remore :iny slurtt :tor repoire, or to disconnect ell driving chains it ell shetts L(rre to he reinoved tor the renewal oit the ninteriei feeding; ond separating eleinentsw lli/loreover, the povver requirements through the various chains ere ciunuletive troni the end shafts torvzird the center or drive sheiih in object oit my invention is to provide i worin Fneer type ot drive wherein there is no cunnilitive eilect olf povver unione; the verioue eheitts chirine` the operation ot the eppermits, sind 'wherein earch individuel shuitt drive nitty he ,inside relatively lighter, yet ensuring longer service, then the chnin ltype oit drive referred to.

frnother object o iny invention is to provide o drive ot such construction that the elements thereoit een he readily removed `tor reiniir., und theft the rr-nnovnl sind renewel ot the 4`url Z/il'y ehelits end their eppurtenences ith tecrlity.

ein lie eili'ected "iv .fin other ohjiect. oli 'my invention ,is to proA `vide n drive wherein the gearing end hein ings :iro continuously and etliectuzrlly luhri euied und protected itroin dust duringthe operation oit the epperotue ulllifiih these end other objects in view, iny invention cornprisee novel tentures ott conetruction und combinations ot parte which will he hereinafter described end claimed.

ln the drnwings-e iio l, is partiel pien oit pgif'ieely equipped with drivingl inechnnisin embody ingr nry invention? the pivotnl casing.;` et the upper end ot the gear housing; heine; in section.

Fig. 2 is e eide elevation ot the upper end of the geeihousing ond the casing.

Fig, 3 is e detail of the hearing for the jointed ends of the worin sections.

Fing. l e partiel eide elevetion oit the grizzly showing1 the geen.' housing end casing in section.

Fin'. 5 is u transverse section, on the line 5--5 ot Fie'. Il,

Referring` to the drawings, l0 designates one of' the inclined side trames of e grizzly, which tranne is provided With leones ll in which nre journoled sind beyond which ei;- tend the adjacent ends ot e series ot tinusverse shorts l2. These she-lts :ire arranged :in spaced pzriellel relation, und are equipped throughout the screening eren with cio-operating; materiel feedingr end screening` elements, including; disks 13. ends ot the shetts are provided with nry novel niechenisni for concurrently drivinii` the shafts in the seine direction, which nieclionisin in its preferred construction ie as Yfollows:

Frist on the respective ehnflits l2 nre worin Wheels lllwhich are adopted to niesh with :L Worin lo extending longitudinally oit the side freine. This Worrnitogether with the Wheels 14, is enclosed in e euitnlole dust Irnd oil prooi housing' 'which is supported odian cent the eide oit the trarne. .lhe worin hes its heel-ings in suitably-located boxes l@ Within 'the housing, sind the inner Wells oit the letter have nppropriute stuffing boxes l? through `which the shafts l?, entend into the .housingn The upper end oit the houeing; ter--` ininetes in n suitable resine' lll into which the proximate end oit tlVJ ivorrn ehn-tt ei;- tende. This end oit the worin shell; ie equipped with e, bevel geur 19 in ineeh with e eiiniler geerf/JO on zi power driven cross- .ehett 2l, which letter shaft hes bearings in the respective sides or heads ot the cosine'. Hence when the shett 2l is driven 'trein e euitehle source ot power the motion is transmitted lroin the eheft. through the bevel ,gearing to the Worm, and thence to the i `series olf gears let on the grienly shafts when Aitl Ali)

such gears are in mesh with the worin, thus rotating the gears simultaneously and in the same directionr` and this without any cumulative effect of power between the garing of the succeeding grizzly shafts as obtains in the sprocket and chain mechanism heretofore enjiployed. The only cumulative cffect incident to the worm type of drive described is indicated by increasingl end thrust and torsion on the worm, and, therefore, as a simple and etiicient means to divide the Yend thrust between the worin shaft bearings, I make the worm in sections, preferably two shown, and provide the meeting ends of the sections!` within the adjacent bearing 1G, with a longitudinal tongue and groove joint 22. This joint permits limited endwise motion of each section yet ensures the rotation. of the two sections as a unit.

Where uniform speed of the succeeding shafts 12 is required Vcounterpart worm wheels 14 on the respective shafts are employed, but if it be desired to increase progressively the speed of the shafts from the receiving to the discharging end of the apparatus,` the succeeding worm wheels are provided with an equally reducing number of `teeth and the worm is located in tangential relation to the pitch circles of the respective wheels.

The gear housing herein illustrated comprises uppe-r and'lower box sections, Q4, respectively, the lower section being bolted permanently in place to llugs 25 on the adjacent side frame of the grizzly, and the upper section being hingedly connected to the lower section. The upper section includes the bevel gear casing 18 and also supports the bearings 16 for the worm. The lower section has bolted thereto two side brackets 26 which embrace the heads of the casing. These brackets are provided with bearing members 26 which are fitted in cen` tral circular openings in the respective heads of the czsing, thus constituting trunnions which enable the upper section of `the housing to be readily swung up from or down upon the lower section, and also insure the proper alinement of the two sections (see Fig. 1).

The upper section is elfectually locked in closed position upon the lower section by any suitable means so as to provide a dust and oil proof structure. In the present instance the lower section is provided at its respective ends with locking bolts 2T which are pivoted, as at 28, to suitably located corner lues 29 on the lower section so as to be movable into and from complementary slotted lugs or keepers 30 on the upper section.

To open the housing it is merely required .to slack off the nuts on the bolts QTand f swing the latter from the lugs` 80, whereupon,

by means, for example, of a suitabley hoist attached thereto, the upper section can be recours swung upward about its axial support on the brackets The upper section is preferably provided at its lower end with a lifting eye 31 to which the hoisting means can be at.- tached. By swinging the upper section oll the housing a` suitable distance above the lower section access can be readily had to the interior of the upper section for the, purpose of removing` any grizzly shalt. with its worm gear, bearings and material separating elements, The hinged or pivotal mounting of the upper `section of the housing facilitates the operation of (.losing the housing and effecting the proper meshing of the worm and the series of worin gears; vince in the lowering' of the upper section the gears come into engagement consecutively with the worm and can be easily manipulattal in respect to the opposing worm teeth. lzy removing the bolts that, hold the brackets 2G to the lower section of the gear housing, the entire top of the housiiig and its appurtenances can be removed to facilitate repairs to the worm, worm bearings and associated parts.

In oi'der to ensure the cilicienti lubrication of the worm gearing and bearings during the operation oi' the grim/dy. the lower sie tion of the housing is provided with trans verse bailiesQ which are suitably-spaccil apart to atl'ord wells or compariments in which the resi'iertivc worm gears lt rotate. rIhese compartments are lacpt supplied with oil into which each gear dips in its rotation, such gear thus being` etleftually lubricated and aso carrying the oil upward to luhricate the rapidly rotating worm. quantity ol' the oil thus deliveroi'i to the worm is thrown thereby against the roof ot the housing and also against a cross-rib Citi which, overhangiin;l each hearing` causes oil to drip into a Isuitably-disl-Josed oil hole illin the top ot' the bearing. Oil is continuously circulated tlnough the housing and the casing IN by the agency of a circulating pump Cif which is conveniently supported on the upper rection. adjacent the lower end o' the latter. 'l`he inlet of this pump is connected by means of a. pipe lo with the lowermost compartment otl the housing, and the outiet; of the pump is connected to the casing 18 at the upper end of the housing by means of a pipe 23T. llenee the oil is pumped from the lowermost compartment ofthe housing and delivered to the bevel gear drive contained in the casing. which oil is thus maintained in continuous circulation vthrough the housing andl casing during the operation of the pump.

It is to be understood that my invention is not limited to the particular construction herein disclosed, as thel construction may he modified within the principle of my inven- 'tion and the scope of the appended claims.

I claiml, In drive mechanism, the combination lllfi with a plurality oit parallel sha-fte, ot worin gears thereon, a Worin in inesli with Said gears, a housing; i'or said gears and Worin, hearings in said housing' l'or the worin, :laaid worin coinprising,l sections having; Capacity for liniited longitudinal movement independently of each other, and ineans for actin atingl said Worin, the ineetinggends oit said sections heini;- rotatahly supported in aerial alignment hy and 'Within the adjacent hearing.

E2. In drive ineehaniani, the e nnhinatien with a plurality oit parallel shafts, of Worin gears thereon, a sectional Worin in inesh with lSaid gears, a housing; :for naid gears and worin, hearings in. sa id housing` vfor the onde olj the reapective seetif'ins oil the worin, Said ain-tions haringl at their ineetini;- endo a. trannie and groove joint u'hieh permits inn' il Ionifitudinal movement ot the rw aneidire sec-onen naid iueetinii ende heini); rotataliily snprmrted in axial alignment hy and within the ai'ljaeent hearing.

P). ln drive ineehanienn the eoinhinaticni with a plurality oit parallel Shafts, of worin gears at one end thereof, a worin in mesh with said gears, a houeingz,` for said gears and Worin, eaid tunisini; coniprisiiniv a tiered section into which extend the ends of the shafts lieaiinm` the Worin gears, and a eeniileniental section movable to and from the 'lined section, hearings in said coinpleinental seetion for the n'orni, means 'tor temporarily locking; the eoinpleniental seetion in closing position, and means for aetuating;l said Worin.

4r. in drive mechanism, the eoinhination 'with a plurality of parallel shafts, oi5 worin nea s at one end thereof, a Worin in inesh with paid geare, a housing for said gears and Worin, said housing` comprising a lined section into which extend the endel of the .sl aitts hearing the Worin ginirs, and a Loni- Vnleinental seetion hingedly Supported at one end of the lined section and inovahle tinrard and trein. the latter, hearings in said hinged section tor the verni, means ir'or teinpinfarily locking the hinged section in closed position, and ineens ifor actuating said Worin.

ln drive n'ieeiianisin, the combination with a plurality ot parallel shafts, ot worin fears at one end thereoli, a Worin in niessh with said nears, a housing; .tor said fears and worin, said housing; eolnin'iisiiig a lifted serlion into whieh extend the endo of the shalt hon inn the u'ornl gears, and a coin `nleinental seetion haring` an extended casing' at one end, a hinge connection hetu'een said easing?, and Athe lined section Wherehy the said eoinpleinental seetion can he hodiljy1 swung to and troni the lixed section, hearings in said eonipleinental section 'for the Worin, a power shaft extending centrally into said easing, and gearing between said sha'lt and the worin.

h. In drive inechanisn'i, the eoinhinatiini 'with a :plurality ol' ijniu'allel shafts, of 'worin gears at one end thereof, a 'worin in ineeh with said gears, a housing 'tor Said nears and worin, said houningr coinnrising a lined lower section into which extend the ends nil' the shalt hearingl the Worin 1inrars, and an upper section having` an extended easingl at one ond thereof, side hraeliets arranged on Athe lower easing to enihraee the heads oil the easing, hearing ineinhers on said lnaehete `litted to circular openings in the respective heads and ailfordingg a hinge eennertii/n lo permit the upper :sei-tion to he swung; u1) troni or down upon the lower section, hea ings in said unheisei-tion :tor the worin, a prnrer shalt mounted in the said hearingf nininhers, and ,egearing between said latter shaft and the worin.

Y. ln drive nieehaniain, the ofnnhinathni Vwith a plurality ot Aparallel shafts, oit 'worin gears thereon, a worin orerlyin,gl said ,gears and in niesh therewith, a homing` for said nears and worin, hearings lor the n'orn'i in said housing, halilee Within said housing)` proridingI oil n'ells in which the worin ,gears rotate, an oil punip, and oil circulatina,` conneetions hetween said pump and dillerent portions oit' the interior ot the housing.

ln drive nieclniniein, the combination with a 'plurality of parallel slia'lf'ts, oit worin gears thereon, a worin oif'erlyiiu; said grin-s and in lnesh therewith, an inclii'ied housing` for said gears and worin, hearings lor the Worin in said housing, hai'llee Within said housing;` prrnfiding oil Wells in Whieh the "worin gears rotate, eaeh hearing haring; an oil inlet, cross-ribs on the rool oif 'the housingoverlying1 the hearings and their oil inlets, an oil pump, and oil eireulatingl connections lieti-veen said puinp and the respective ends ot the housinon 9. ln drive mechanism, the eoinhiinition with a plurality oli parallel sliatte, oit worin nears thereon, a Worin overlying,` said gears and in inesh tl'ierewi'th, a n inclined housing tor said gears and Worin, said housing hat7H in ej an extended canine; at one end thereol, hearings for the 'worin in said houeing, haliies within said hlnisii'iuv prinfidinu` o'ii VWella in -which the worin gears rotate, naar" ing in said eaeinn; ttor ':oi'itinuouely rotatinun the worin, an oli. pinion, and coinneetioinA between said punir) and the canine; and hetween the pump and the opposite end of the housing.

Signed at New Yori; in the county and State of New York this lirst day olf Nd veinher, A. D, 1926. l

GRDON DUDGEL mii 

